jsontools实现java对象与json值之间互相转换

怼烎@ 2021-09-10 13:14 280阅读 0赞

依赖包jsontools-core-1.7.jar，antlrworks-2.7.7.jar

两个jar打包下载地址:[http://download.csdn.net/detail/u014175572/8796675][http_download.csdn.net_detail_u014175572_8796675]

如果使用的是Maven:

<dependency>
        <groupId>com.sdicons.jsontools</groupId>
        <artifactId>jsontools-core</artifactId>
        <version>1.7</version>
    </dependency>

实现代码：

Student类

package org.ywzn;
    
    public class Student {
    
    	private Integer id;
    	private String name;
    	private String sex;
    	private Integer age;
    	private String[] hobby;
    
    	public Integer getId() {
    		return id;
    	}
    
    	public void setId(Integer id) {
    		this.id = id;
    	}
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
    
    	public String getSex() {
    		return sex;
    	}
    
    	public void setSex(String sex) {
    		this.sex = sex;
    	}
    
    	public Integer getAge() {
    		return age;
    	}
    
    	public void setAge(Integer age) {
    		this.age = age;
    	}
    
    	public String[] getHobby() {
    		return hobby;
    	}
    
    	public void setHobby(String[] hobby) {
    		this.hobby = hobby;
    	}
    
    }

Schoolmaster类

package org.ywzn;
    
    public class Schoolmaster {
    
    	private String name;
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
    }

School类

package org.ywzn;
    
    import java.util.Date;
    import java.util.List;
    
    public class School {
    
    	private String name;
    	private List<Student> list;
    	private Date createDate;
    	private Schoolmaster schoolmaster;
    
    	public List<Student> getList() {
    		return list;
    	}
    
    	public void setList(List<Student> list) {
    		this.list = list;
    	}
    
    	public Date getCreateDate() {
    		return createDate;
    	}
    
    	public void setCreateDate(Date createDate) {
    		this.createDate = createDate;
    	}
    
    	public Schoolmaster getSchoolmaster() {
    		return schoolmaster;
    	}
    
    	public void setSchoolmaster(Schoolmaster schoolmaster) {
    		this.schoolmaster = schoolmaster;
    	}
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
    }

测试代码

package org.ywzn;
    
    import java.io.StringReader;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.Iterator;
    import java.util.List;
    
    import antlr.RecognitionException;
    import antlr.TokenStreamException;
    
    import com.sdicons.json.mapper.JSONMapper;
    import com.sdicons.json.mapper.MapperException;
    import com.sdicons.json.model.JSONValue;
    import com.sdicons.json.parser.JSONParser;
    
    public class Main {
    
    	@SuppressWarnings("rawtypes")
    	public static void main(String[] args) throws TokenStreamException,
    			RecognitionException {
    		List<Student> list = new ArrayList<Student>();
    		Student stu1 = new Student();
    		stu1.setName("学生甲");
    		Student stu2 = new Student();
    		stu2.setName("学生乙");
    		list.add(stu1);
    		list.add(stu2);
    
    		Schoolmaster schoolmaster = new Schoolmaster();
    		schoolmaster.setName("校长甲");
    
    		School school = new School();
    		school.setCreateDate(new Date());
    		school.setList(list);
    		school.setName("清华大学");
    		school.setSchoolmaster(schoolmaster);
    
    		try {
    			// JAVA对象转换成JSON值
    			JSONValue jsonValue = JSONMapper.toJSON(school);
    			String jsonStr = jsonValue.render(true); // 是否格式化
    			System.out.println(jsonStr);
    			String str = "{\"createDate\":\"2015-06-05T18:43:07.060\",\"list\":[{\"age\":null,\"hobby\":null,\"id\":null,\"name\":\"学生甲\",\"sex\":null},{\"age\":null,\"hobby\":null,\"id\":null,\"name\":\"学生乙\",\"sex\":null}],\"name\":\"清华大学\",\"schoolmaster\":{\"name\":\"校长甲\"}}";
    			// JSON值转换成JAVA对象
    			JSONParser parser1 = new JSONParser(new StringReader(str));
    			JSONValue jsonValue1 = parser1.nextValue();
    			School sch = (School) JSONMapper.toJava(jsonValue1, School.class);
    			System.out.println(sch.getName());
    			System.out.println(sch.getCreateDate());
    			System.out.println(sch.getSchoolmaster().getName());
    			List<Student> stuList = sch.getList();
    			Iterator iter = stuList.iterator();
    			while (iter.hasNext()) {
    				Student stu = (Student) iter.next();
    				System.out.println(stu.getName());
    			}
    		} catch (MapperException e) {
    			e.printStackTrace();
    		}
    	}
    }

输出

{
       "createDate" : "2015-06-11T16:53:43.031",
       "list" :
          [
             {
                "age" : null,
                "hobby" : null,
                "id" : null,
                "name" : "学生甲",
                "sex" : null
             },
             {
                "age" : null,
                "hobby" : null,
                "id" : null,
                "name" : "学生乙",
                "sex" : null
             }
          ],
       "name" : "清华大学",
       "schoolmaster" :
          {
             "name" : "校长甲"
          }
    }
    清华大学
    Fri Jun 05 18:43:07 CST 2015
    校长甲
    学生甲
    学生乙

转自:[http://blog.csdn.net/sjiang2142/article/details/6709908\#][http_blog.csdn.net_sjiang2142_article_details_6709908]

[http_download.csdn.net_detail_u014175572_8796675]: http://download.csdn.net/detail/u014175572/8796675
[http_blog.csdn.net_sjiang2142_article_details_6709908]: http://blog.csdn.net/sjiang2142/article/details/6709908#